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While externally similar shapes, these two minerals are very different inside.
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Smectite Group from
Jáchymov, Karlovy Vary District, Karlovy Vary Region, Czech Republic


Locality type:Municipality
Classification
Species:'Smectite Group' (not an IMA approved species)
Formula:A0.3D2-3[T4O10]Z2 · nH2O
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Smectite Group data
Locality Data:Click here to view Jáchymov, Karlovy Vary District, Karlovy Vary Region, Czech Republic
Data Identifiers
Mindat Occurrence Record ID:112706
Long-form Identifier:1:3:112706:5
GUID (UUID V4):0
Nearest other occurrences of Smectite Group
15.6km (9.7 miles) ⓘThermal springs area, Karlovy Vary, Karlovy Vary District, Karlovy Vary Region, Czech Republic
56.0km (34.8 miles) ⓘWartberg quarries, Längenau, Selb, Wunsiedel im Fichtelgebirge, Upper Franconia, Bavaria, Germany
88.5km (55.0 miles) ⓘPorphyrite quarry, Wurgwitz, Freital, Sächsische Schweiz-Osterzgebirge, Saxony, Germany
References
Hloušek, Jan; Tvrdý, Jaromir (2002) Interessante Sekundärmineralien aus Jáchymov [Interesting secondary minerals from Jáchymov]. Lapis, 27 (7-8). 44-66
 
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